/**
 *
 * Color picker
 * Author: Stefan Petre www.eyecon.ro
 * 
 * Dual licensed under the MIT and GPL licenses
 * 
 */
(function($) {
    var ColorPicker = function() {
        var
                ids = {},
                inAction,
                charMin = 65,
                visible,
                tpl = '<div class="colorpicker"><div class="colorpicker_color"><div><div></div></div></div><div class="colorpicker_hue"><div></div></div><div class="colorpicker_new_color"></div><div class="colorpicker_current_color"></div><div class="colorpicker_hex"><input type="text" maxlength="6" size="6" /></div><div class="colorpicker_rgb_r colorpicker_field"><input type="text" maxlength="3" size="3" /><span></span></div><div class="colorpicker_rgb_g colorpicker_field"><input type="text" maxlength="3" size="3" /><span></span></div><div class="colorpicker_rgb_b colorpicker_field"><input type="text" maxlength="3" size="3" /><span></span></div><div class="colorpicker_hsb_h colorpicker_field"><input type="text" maxlength="3" size="3" /><span></span></div><div class="colorpicker_hsb_s colorpicker_field"><input type="text" maxlength="3" size="3" /><span></span></div><div class="colorpicker_hsb_b colorpicker_field"><input type="text" maxlength="3" size="3" /><span></span></div><div class="colorpicker_submit"></div></div>',
                defaults = {
                    eventName: 'click',
                    onShow: function() {
                    },
                    onBeforeShow: function() {
                    },
                    onHide: function() {
                    },
                    onChange: function() {
                    },
                    onSubmit: function() {
                    },
                    color: 'ff0000',
                    livePreview: true,
                    flat: false
                },
        fillRGBFields = function(hsb, cal) {
            var rgb = HSBToRGB(hsb);
            $(cal).data('colorpicker').fields
                    .eq(1).val(rgb.r).end()
                    .eq(2).val(rgb.g).end()
                    .eq(3).val(rgb.b).end();
        },
                fillHSBFields = function(hsb, cal) {
                    $(cal).data('colorpicker').fields
                            .eq(4).val(hsb.h).end()
                            .eq(5).val(hsb.s).end()
                            .eq(6).val(hsb.b).end();
                },
                fillHexFields = function(hsb, cal) {
                    $(cal).data('colorpicker').fields
                            .eq(0).val(HSBToHex(hsb)).end();
                },
                setSelector = function(hsb, cal) {
                    $(cal).data('colorpicker').selector.css('backgroundColor', '#' + HSBToHex({h: hsb.h, s: 100, b: 100}));
                    $(cal).data('colorpicker').selectorIndic.css({
                        left: parseInt(150 * hsb.s / 100, 10),
                        top: parseInt(150 * (100 - hsb.b) / 100, 10)
                    });
                },
                setHue = function(hsb, cal) {
                    $(cal).data('colorpicker').hue.css('top', parseInt(150 - 150 * hsb.h / 360, 10));
                },
                setCurrentColor = function(hsb, cal) {
                    $(cal).data('colorpicker').currentColor.css('backgroundColor', '#' + HSBToHex(hsb));
                },
                setNewColor = function(hsb, cal) {
                    $(cal).data('colorpicker').newColor.css('backgroundColor', '#' + HSBToHex(hsb));
                },
                keyDown = function(ev) {
                    var pressedKey = ev.charCode || ev.keyCode || -1;
                    if ((pressedKey > charMin && pressedKey <= 90) || pressedKey == 32) {
                        return false;
                    }
                    var cal = $(this).parent().parent();
                    if (cal.data('colorpicker').livePreview === true) {
                        change.apply(this);
                    }
                },
                change = function(ev) {
                    var cal = $(this).parent().parent(), col;
                    if (this.parentNode.className.indexOf('_hex') > 0) {
                        cal.data('colorpicker').color = col = HexToHSB(fixHex(this.value));
                    } else if (this.parentNode.className.indexOf('_hsb') > 0) {
                        cal.data('colorpicker').color = col = fixHSB({
                            h: parseInt(cal.data('colorpicker').fields.eq(4).val(), 10),
                            s: parseInt(cal.data('colorpicker').fields.eq(5).val(), 10),
                            b: parseInt(cal.data('colorpicker').fields.eq(6).val(), 10)
                        });
                    } else {
                        cal.data('colorpicker').color = col = RGBToHSB(fixRGB({
                            r: parseInt(cal.data('colorpicker').fields.eq(1).val(), 10),
                            g: parseInt(cal.data('colorpicker').fields.eq(2).val(), 10),
                            b: parseInt(cal.data('colorpicker').fields.eq(3).val(), 10)
                        }));
                    }
                    if (ev) {
                        fillRGBFields(col, cal.get(0));
                        fillHexFields(col, cal.get(0));
                        fillHSBFields(col, cal.get(0));
                    }
                    setSelector(col, cal.get(0));
                    setHue(col, cal.get(0));
                    setNewColor(col, cal.get(0));
                    cal.data('colorpicker').onChange.apply(cal, [col, HSBToHex(col), HSBToRGB(col)]);
                },
                blur = function(ev) {
                    var cal = $(this).parent().parent();
                    cal.data('colorpicker').fields.parent().removeClass('colorpicker_focus');
                },
                focus = function() {
                    charMin = this.parentNode.className.indexOf('_hex') > 0 ? 70 : 65;
                    $(this).parent().parent().data('colorpicker').fields.parent().removeClass('colorpicker_focus');
                    $(this).parent().addClass('colorpicker_focus');
                },
                downIncrement = function(ev) {
                    var field = $(this).parent().find('input').focus();
                    var current = {
                        el: $(this).parent().addClass('colorpicker_slider'),
                        max: this.parentNode.className.indexOf('_hsb_h') > 0 ? 360 : (this.parentNode.className.indexOf('_hsb') > 0 ? 100 : 255),
                        y: ev.pageY,
                        field: field,
                        val: parseInt(field.val(), 10),
                        preview: $(this).parent().parent().data('colorpicker').livePreview
                    };
                    $(document).bind('mouseup', current, upIncrement);
                    $(document).bind('mousemove', current, moveIncrement);
                },
                moveIncrement = function(ev) {
                    ev.data.field.val(Math.max(0, Math.min(ev.data.max, parseInt(ev.data.val + ev.pageY - ev.data.y, 10))));
                    if (ev.data.preview) {
                        change.apply(ev.data.field.get(0), [true]);
                    }
                    return false;
                },
                upIncrement = function(ev) {
                    change.apply(ev.data.field.get(0), [true]);
                    ev.data.el.removeClass('colorpicker_slider').find('input').focus();
                    $(document).unbind('mouseup', upIncrement);
                    $(document).unbind('mousemove', moveIncrement);
                    return false;
                },
                downHue = function(ev) {
                    var current = {
                        cal: $(this).parent(),
                        y: $(this).offset().top
                    };
                    current.preview = current.cal.data('colorpicker').livePreview;
                    $(document).bind('mouseup', current, upHue);
                    $(document).bind('mousemove', current, moveHue);
                },
                moveHue = function(ev) {
                    change.apply(
                            ev.data.cal.data('colorpicker')
                            .fields
                            .eq(4)
                            .val(parseInt(360 * (150 - Math.max(0, Math.min(150, (ev.pageY - ev.data.y)))) / 150, 10))
                            .get(0),
                            [ev.data.preview]
                            );
                    return false;
                },
                upHue = function(ev) {
                    fillRGBFields(ev.data.cal.data('colorpicker').color, ev.data.cal.get(0));
                    fillHexFields(ev.data.cal.data('colorpicker').color, ev.data.cal.get(0));
                    $(document).unbind('mouseup', upHue);
                    $(document).unbind('mousemove', moveHue);
                    return false;
                },
                downSelector = function(ev) {
                    var current = {
                        cal: $(this).parent(),
                        pos: $(this).offset()
                    };
                    current.preview = current.cal.data('colorpicker').livePreview;
                    $(document).bind('mouseup', current, upSelector);
                    $(document).bind('mousemove', current, moveSelector);
                },
                moveSelector = function(ev) {
                    change.apply(
                            ev.data.cal.data('colorpicker')
                            .fields
                            .eq(6)
                            .val(parseInt(100 * (150 - Math.max(0, Math.min(150, (ev.pageY - ev.data.pos.top)))) / 150, 10))
                            .end()
                            .eq(5)
                            .val(parseInt(100 * (Math.max(0, Math.min(150, (ev.pageX - ev.data.pos.left)))) / 150, 10))
                            .get(0),
                            [ev.data.preview]
                            );
                    return false;
                },
                upSelector = function(ev) {
                    fillRGBFields(ev.data.cal.data('colorpicker').color, ev.data.cal.get(0));
                    fillHexFields(ev.data.cal.data('colorpicker').color, ev.data.cal.get(0));
                    $(document).unbind('mouseup', upSelector);
                    $(document).unbind('mousemove', moveSelector);
                    return false;
                },
                enterSubmit = function(ev) {
                    $(this).addClass('colorpicker_focus');
                },
                leaveSubmit = function(ev) {
                    $(this).removeClass('colorpicker_focus');
                },
                clickSubmit = function(ev) {
                    var cal = $(this).parent();
                    var col = cal.data('colorpicker').color;
                    cal.data('colorpicker').origColor = col;
                    setCurrentColor(col, cal.get(0));
                    cal.data('colorpicker').onSubmit(col, HSBToHex(col), HSBToRGB(col), cal.data('colorpicker').el);
                },
                show = function(ev) {
                    var cal = $('#' + $(this).data('colorpickerId'));
                    cal.data('colorpicker').onBeforeShow.apply(this, [cal.get(0)]);
                    var pos = $(this).offset();
                    var viewPort = getViewport();
                    var top = pos.top + this.offsetHeight;
                    var left = pos.left;
                    if (top + 176 > viewPort.t + viewPort.h) {
                        top -= this.offsetHeight + 176;
                    }
                    if (left + 356 > viewPort.l + viewPort.w) {
                        left -= 356;
                    }
                    cal.css({left: left + 'px', top: top + 'px'});
                    if (cal.data('colorpicker').onShow.apply(this, [cal.get(0)]) != false) {
                        cal.show();
                    }
                    $(document).bind('mousedown', {cal: cal}, hide);
                    return false;
                },
                hide = function(ev) {
                    if (!isChildOf(ev.data.cal.get(0), ev.target, ev.data.cal.get(0))) {
                        if (ev.data.cal.data('colorpicker').onHide.apply(this, [ev.data.cal.get(0)]) != false) {
                            ev.data.cal.hide();
                        }
                        $(document).unbind('mousedown', hide);
                    }
                },
                isChildOf = function(parentEl, el, container) {
                    if (parentEl == el) {
                        return true;
                    }
                    if (parentEl.contains) {
                        return parentEl.contains(el);
                    }
                    if (parentEl.compareDocumentPosition) {
                        return !!(parentEl.compareDocumentPosition(el) & 16);
                    }
                    var prEl = el.parentNode;
                    while (prEl && prEl != container) {
                        if (prEl == parentEl)
                            return true;
                        prEl = prEl.parentNode;
                    }
                    return false;
                },
                getViewport = function() {
                    var m = document.compatMode == 'CSS1Compat';
                    return {
                        l: window.pageXOffset || (m ? document.documentElement.scrollLeft : document.body.scrollLeft),
                        t: window.pageYOffset || (m ? document.documentElement.scrollTop : document.body.scrollTop),
                        w: window.innerWidth || (m ? document.documentElement.clientWidth : document.body.clientWidth),
                        h: window.innerHeight || (m ? document.documentElement.clientHeight : document.body.clientHeight)
                    };
                },
                fixHSB = function(hsb) {
                    return {
                        h: Math.min(360, Math.max(0, hsb.h)),
                        s: Math.min(100, Math.max(0, hsb.s)),
                        b: Math.min(100, Math.max(0, hsb.b))
                    };
                },
                fixRGB = function(rgb) {
                    return {
                        r: Math.min(255, Math.max(0, rgb.r)),
                        g: Math.min(255, Math.max(0, rgb.g)),
                        b: Math.min(255, Math.max(0, rgb.b))
                    };
                },
                fixHex = function(hex) {
                    var len = 6 - hex.length;
                    if (len > 0) {
                        var o = [];
                        for (var i = 0; i < len; i++) {
                            o.push('0');
                        }
                        o.push(hex);
                        hex = o.join('');
                    }
                    return hex;
                },
                HexToRGB = function(hex) {
                    var hex = parseInt(((hex.indexOf('#') > -1) ? hex.substring(1) : hex), 16);
                    return {r: hex >> 16, g: (hex & 0x00FF00) >> 8, b: (hex & 0x0000FF)};
                },
                HexToHSB = function(hex) {
                    return RGBToHSB(HexToRGB(hex));
                },
                RGBToHSB = function(rgb) {
                    var hsb = {
                        h: 0,
                        s: 0,
                        b: 0
                    };
                    var min = Math.min(rgb.r, rgb.g, rgb.b);
                    var max = Math.max(rgb.r, rgb.g, rgb.b);
                    var delta = max - min;
                    hsb.b = max;
                    if (max != 0) {

                    }
                    hsb.s = max != 0 ? 255 * delta / max : 0;
                    if (hsb.s != 0) {
                        if (rgb.r == max) {
                            hsb.h = (rgb.g - rgb.b) / delta;
                        } else if (rgb.g == max) {
                            hsb.h = 2 + (rgb.b - rgb.r) / delta;
                        } else {
                            hsb.h = 4 + (rgb.r - rgb.g) / delta;
                        }
                    } else {
                        hsb.h = -1;
                    }
                    hsb.h *= 60;
                    if (hsb.h < 0) {
                        hsb.h += 360;
                    }
                    hsb.s *= 100 / 255;
                    hsb.b *= 100 / 255;
                    return hsb;
                },
                HSBToRGB = function(hsb) {
                    var rgb = {};
                    var h = Math.round(hsb.h);
                    var s = Math.round(hsb.s * 255 / 100);
                    var v = Math.round(hsb.b * 255 / 100);
                    if (s == 0) {
                        rgb.r = rgb.g = rgb.b = v;
                    } else {
                        var t1 = v;
                        var t2 = (255 - s) * v / 255;
                        var t3 = (t1 - t2) * (h % 60) / 60;
                        if (h == 360)
                            h = 0;
                        if (h < 60) {
                            rgb.r = t1;
                            rgb.b = t2;
                            rgb.g = t2 + t3
                        }
                        else if (h < 120) {
                            rgb.g = t1;
                            rgb.b = t2;
                            rgb.r = t1 - t3
                        }
                        else if (h < 180) {
                            rgb.g = t1;
                            rgb.r = t2;
                            rgb.b = t2 + t3
                        }
                        else if (h < 240) {
                            rgb.b = t1;
                            rgb.r = t2;
                            rgb.g = t1 - t3
                        }
                        else if (h < 300) {
                            rgb.b = t1;
                            rgb.g = t2;
                            rgb.r = t2 + t3
                        }
                        else if (h < 360) {
                            rgb.r = t1;
                            rgb.g = t2;
                            rgb.b = t1 - t3
                        }
                        else {
                            rgb.r = 0;
                            rgb.g = 0;
                            rgb.b = 0
                        }
                    }
                    return {r: Math.round(rgb.r), g: Math.round(rgb.g), b: Math.round(rgb.b)};
                },
                RGBToHex = function(rgb) {
                    var hex = [
                        rgb.r.toString(16),
                        rgb.g.toString(16),
                        rgb.b.toString(16)
                    ];
                    $.each(hex, function(nr, val) {
                        if (val.length == 1) {
                            hex[nr] = '0' + val;
                        }
                    });
                    return hex.join('');
                },
                HSBToHex = function(hsb) {
                    return RGBToHex(HSBToRGB(hsb));
                },
                restoreOriginal = function() {
                    var cal = $(this).parent();
                    var col = cal.data('colorpicker').origColor;
                    cal.data('colorpicker').color = col;
                    fillRGBFields(col, cal.get(0));
                    fillHexFields(col, cal.get(0));
                    fillHSBFields(col, cal.get(0));
                    setSelector(col, cal.get(0));
                    setHue(col, cal.get(0));
                    setNewColor(col, cal.get(0));
                };
        return {
            init: function(opt) {
                opt = $.extend({}, defaults, opt || {});
                if (typeof opt.color == 'string') {
                    opt.color = HexToHSB(opt.color);
                } else if (opt.color.r != undefined && opt.color.g != undefined && opt.color.b != undefined) {
                    opt.color = RGBToHSB(opt.color);
                } else if (opt.color.h != undefined && opt.color.s != undefined && opt.color.b != undefined) {
                    opt.color = fixHSB(opt.color);
                } else {
                    return this;
                }
                return this.each(function() {
                    if (!$(this).data('colorpickerId')) {
                        var options = $.extend({}, opt);
                        options.origColor = opt.color;
                        var id = 'collorpicker_' + parseInt(Math.random() * 1000);
                        $(this).data('colorpickerId', id);
                        var cal = $(tpl).attr('id', id);
                        if (options.flat) {
                            cal.appendTo(this).show();
                        } else {
                            cal.appendTo(document.body);
                        }
                        options.fields = cal
                                .find('input')
                                .bind('keyup', keyDown)
                                .bind('change', change)
                                .bind('blur', blur)
                                .bind('focus', focus);
                        cal
                                .find('span').bind('mousedown', downIncrement).end()
                                .find('>div.colorpicker_current_color').bind('click', restoreOriginal);
                        options.selector = cal.find('div.colorpicker_color').bind('mousedown', downSelector);
                        options.selectorIndic = options.selector.find('div div');
                        options.el = this;
                        options.hue = cal.find('div.colorpicker_hue div');
                        cal.find('div.colorpicker_hue').bind('mousedown', downHue);
                        options.newColor = cal.find('div.colorpicker_new_color');
                        options.currentColor = cal.find('div.colorpicker_current_color');
                        cal.data('colorpicker', options);
                        cal.find('div.colorpicker_submit')
                                .bind('mouseenter', enterSubmit)
                                .bind('mouseleave', leaveSubmit)
                                .bind('click', clickSubmit);
                        fillRGBFields(options.color, cal.get(0));
                        fillHSBFields(options.color, cal.get(0));
                        fillHexFields(options.color, cal.get(0));
                        setHue(options.color, cal.get(0));
                        setSelector(options.color, cal.get(0));
                        setCurrentColor(options.color, cal.get(0));
                        setNewColor(options.color, cal.get(0));
                        if (options.flat) {
                            cal.css({
                                position: 'relative',
                                display: 'block'
                            });
                        } else {
                            $(this).bind(options.eventName, show);
                        }
                    }
                });
            },
            showPicker: function() {
                return this.each(function() {
                    if ($(this).data('colorpickerId')) {
                        show.apply(this);
                    }
                });
            },
            hidePicker: function() {
                return this.each(function() {
                    if ($(this).data('colorpickerId')) {
                        $('#' + $(this).data('colorpickerId')).hide();
                    }
                });
            },
            setColor: function(col) {
                if (typeof col == 'string') {
                    col = HexToHSB(col);
                } else if (col.r != undefined && col.g != undefined && col.b != undefined) {
                    col = RGBToHSB(col);
                } else if (col.h != undefined && col.s != undefined && col.b != undefined) {
                    col = fixHSB(col);
                } else {
                    return this;
                }
                return this.each(function() {
                    if ($(this).data('colorpickerId')) {
                        var cal = $('#' + $(this).data('colorpickerId'));
                        cal.data('colorpicker').color = col;
                        cal.data('colorpicker').origColor = col;
                        fillRGBFields(col, cal.get(0));
                        fillHSBFields(col, cal.get(0));
                        fillHexFields(col, cal.get(0));
                        setHue(col, cal.get(0));
                        setSelector(col, cal.get(0));
                        setCurrentColor(col, cal.get(0));
                        setNewColor(col, cal.get(0));
                    }
                });
            }
        };
    }();
    $.fn.extend({
        ColorPicker: ColorPicker.init,
        ColorPickerHide: ColorPicker.hidePicker,
        ColorPickerShow: ColorPicker.showPicker,
        ColorPickerSetColor: ColorPicker.setColor
    });
})(jQuery)